Finding the Third Proportional to 13,145.63 and 19,855.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145.63 : 19,855.69 = 19,855.69 : x
2. Step 2: Convert to fraction form
   13,145.63/19,855.69 = 19,855.69/x
3. Step 3: Cross multiply
   13,145.63x = 19,855.69 × 19,855.69
4. Step 4: Simplify right side
   13,145.63x = 394,248,326.10
5. Step 5: Solve for x
   x = 394,248,326.10/13,145.63
6. Step 6: Final answer
   x = 29,990.84